E SERIES ENERGY STAR® qualified installation amplifiers ▸ E 4:2 ▸ E 8:2 ▸ E 12:2 Operation Manual
1. Important safety instructions 1. Important safety instructions Before using your E Series, be sure to carefully read the applicable items of this Operation Manual and the Safety Instructions. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Read these instructions. Keep these instructions Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
. Warnings 3.2 Warnings 3.3 User responsibility To reduce risk of fire or electric shock, do not expose this apparatus to rain or moisture. Français: Pour réduire les risques d’incendie ou de choc électrique, n’exposez pas l’appareil à la pluie ou à l’humidité. 3.1.1 Mains connection grounding Do not expose this system/apparatus to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the apparatus.
. Table of Contents 4. Table of Contents 1. Important safety instructions 2 2. Approvals 2 3. Warnings 2 3.1 Explanation of warning symbols 2 3.2 Warnings 3 3.3 User responsibility 3 5. Introduction 6 5.1. Welcome 6 5.2. Features 6 5.2.1. Class D output stage and universal power supply with low current draw 6 5.2.2. Amplifier sensitivity / gain 7 5.2.3. Protection and performance optimization 7 5.2.4. 50 Hz high-pass filter 8 5.2.5.
4. Table of Contents 13. Operation and performance 14 13.1. Introduction 14 13.2. Operating precautions 14 13.3. Signal flow and headroom 14 13.4. Audio input and output connections, setup and features 15 13.4.1. Balanced / unbalanced Input connection 15 13.4.2. Output operation and connection 15 13.4.3. Output bridge mode and asymmetric loading 16 13.4.4. Constant Voltage 70 V system setup and operation 18 13.4.5. Output Current Peak Limiter (CPL) 18 14.
5. Introduction 5. Introduction 5.1. Welcome Thank you for choosing a Lab.gruppen E Series product built around Lab.gruppen’s IDEEATM, the IntelliDrive Energy Efficient Amplifier. This manual provides a comprehensive guide to the features and functionality of E Series model E 12:2, E 8:2 and E 4:2 amplifiers. Please read through this manual in its entirety to become fully acquainted with configuration options and protection circuitry.
5. Introduction 5.2.2. Amplifier sensitivity / gain For ease of use in system integration, E Series have been designed with a fixed sensitivity of 4 dBu. Each model offers two operational modes individually selectable per channel: * “70 V” – Optimized for constant voltage systems but also can be used when load impedance is 8 ohms or higher. Input signal of 4 dBu produces 70.7 Vrms output, for gain of 35.2 dB. * “Lo-Z” – Optimized for driving loads with impedance below 16 ohms.
6. Unpacking and visual checks 5.2.4. 50 Hz high-pass filter Each channel has a switchable 50 Hz high-pass filter. In the default full-range position the amplifier has a flat response with a -3 dB point at 2 Hz. When engaged, the filter rolls off low frequencies (12 dB/octave) for greater efficiency and reliability in, for example, 70 V high-impedance systems where the removal of very low frequency content may be desired.
7. Installation 7. Installation 7.1. Mounting The amplifier is one rack unit high (1U) and will fit into a standard EIA 19” rack. The depth is 276 mm (10.9”). The weight is approximately 4.2 kg (9.3 lbs) depending on model type. Free airflow from front-to-rear of the amplifier must be allowed. Therefore, no doors or rack-lids should be mounted in front of or behind the amplifiers. Amplifiers may be stacked directly on top of each other.
9. Operating voltage 9. Operating voltage All E Series amplifiers have a universal power supply that accepts mains voltages from 100-240 V @ 50 or 60 Hz. The amplifier requires 85 V to start, but will remain in service with mains voltage dips down to 60 V; however, power output will be limited if it’s less than 100 V. An IEC male receptacle is provided on the rear panel of all amplifiers.
. Front panel 11. Front panel The front panel presents the following amplifier status indicators: 1 Power – Indicates standby mode with amber and on mode with green. 2 Temperature – Flashes amber to for early warning if the temperature is high in either the PSU or one of the output channels. Dangerously high temperature initiates muting, as indicated with constant amber light. 3 Input Signal Present – Illuminates when the input signal level exceeds the Signal Present Threshold (SPT).
. Rear panel 12. Rear panel POWER STATE CONTROL MONITOR CHANNEL 1 BALANCED INPUTS CH 1 -10dB GPI GPO GPIO connectors POWER CHANNEL 2 Locking IEC; must be grounded/earthed 00-240V 50-60Hz BALANCED SPEAKER OUTPUTS CH 1 CH 2 CH 2 HIGH PASS 70V FULL RANGE Lo-Z HIGH PASS 70V FULL RANGE Lo-Z SIG -Inf 0 3-pole block type input connectors E 12:2 Designed in Sweden manufactured in Thailand -10dB DO NOT CONNECT ANY TERMINAL TO GROUND.
12. Rear panel The following features are located on the rear panel of the E Series: 1 Attenuators – Individual attenuation for the two amplifier channels. Range is 0 dB to -infinity. The 12 o’clock position indicates -10 dB attenuation. The sensitivity for the amplifier is 4 dBu when the attenuator is at 0 dB and 14 dBu when the attenuator is at -10 dB. 2 SIG – The green indicator will be lit whenever the input signal is above the signal present threshold.
13. Operation and performance 13. Operation and performance 13.1. Introduction The following sections provide comprehensive information on amplifier connection, setup, operation, and performance. The detailed information included here is essential to realizing the full functionality of the E Series amplifiers. 13.2. Operating precautions • Make sure that the amplifier is off or in standby mode before making any input or output connections.
13. Operation and performance 13.4. Audio input and output connections, setup and features 13.4.1. Balanced / unbalanced Input connection POWER STATE CONTROL MONITOR CHANNEL 1 BALANCED INPUTS CH 1 -10dB GPI GPO POWER CHANNEL 2 CH 2 HIGH PASS 70V FULL RANGE Lo-Z -10dB SIG -Inf 0 HIGH PASS 70V FULL RANGE Lo-Z SIG -Inf 0 Electronically balanced, Phoenix-type inputs are provided on all channels. Follow the +,– and Ground labels when connecting the input signal.
13. Operation and performance 13.4.3. Output bridge mode and asymmetric loading The E Series is designed with inherently bridged outputs for a high voltage swing, with full headroom accessed in the 70 V mode. So, in some ways the amplifier is a 4 channel amplifier with permanently bridged outputs which turns it into a 2 channel amplifier. This design also accommodates asymmetric loading, wherein only one channel can be connected and draw all power from the power supply.
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14. Appendices 13.4.4. Constant Voltage 70 V system setup and operation When using E Series amplifiers to drive constant voltage (high-impedance) speaker systems at 70 Vrms or 100 V peak, in most cases you can simply connect the speakers to the amplifier output terminals, select the 70 V RSL setting, and place the amplifier in service. Limiters - Limiting is applied to avoid distortion at the selected voltage limit threshold and to avoid hitting the rail if it has sagged below the selected threshold.
14. Appendices 14.2. Thermal dissipation E 4:2 Level Load Output power Line current *2) 120 VAC 230 VAC 0.32 Standby w. remote Power Off. 0.016 0.186 Power on, Idling 0.306 70 V / Ch. 200 x2 16 ohms / Ch. 200 x2 8 ohms / Ch. 200 x2 Pink Pseudo Noise (1/8) 4 ohms / Ch. 200 x2 2 ohms / Ch. 200 x2 0.7 1.1 0.7 1.1 0.7 1.1 0.8 1.2 0.8 1.3 Watt *1) In Out Thermal Dissipation Dissipated BTU/hr kCal/hr 0.7 0 0.72 2.5 0.6 0.4 0 0.38 1.3 0.3 21.5 0 21.5 73.3 18.5 22.
14. Appendices E 12:2 Level Load Line current *2) Output power In Out 0.032 0.70 0 0.7 0.31 0 0.3 1.1 0.3 0.183 20.7 0 20.7 70.5 17.8 21.9 0 21.9 74.7 18.8 210 150 60 205 52 0.019 Power on, Idling 0.315 70 V / Ch. 16 ohms / Ch. Pink Pseudo Noise (1/8) 8 ohms / Ch. 600 33 600 x2 x2 x2 4 ohms / Ch. 600 x2 2 ohms / Ch. 600 x2 1.8 2.9 BTU/hr kCal/hr 2.4 0.6 223 150 73 248 62 1.1 128 83 45 154 39 136 83 54 183 46 1.
14. Appendices E 4:2 Channel RSL switch Channel load Ch. 1 Ch. 2 Ch. 1 Ch. 2 Power output Ch.1 Ch.
14. Appendices E 8:2 Channel RSL switch Channel load Ch. 1 Ch. 2 Ch. 1 Ch. 2 Power output Ch.1 Ch.
14. Appendices E 8:2 Channel RSL switch Channel load Ch. 1 Ch. 2 Ch. 1 Ch. 2 Power output Ch.1 Ch.
14. Appendices 14.4. Technical specifications General Number of powered channels Total output all channels driven Max output voltage per channel Max. output current per channel E 12:2 2 1200 W 100 V / 70 Vrms 18 Arms E 8:2 2 800 W 100 V / 70 Vrms 16 Arms E 4:2 2 400 W 100 V / 70 Vrms 11 Arms Max. Output Power (all ch.
15. Warranty 15. Warranty This product is manufactured by Lab.gruppen, and it is warranted to be free from any defects caused by components or factory workmanship, under normal use and service, for a period of three (3) years from date of purchase from an authorized Lab.gruppen dealer. If the product fails to perform as specified during the warranty period, Lab.
16. Service 16. Service International If your Lab.gruppen product requires repair, contact your Lab.gruppen dealer or distributor. Find your local distributor or sales representative via http://labgruppen.com/distributors/. A full listing of service centre is available at http://labgruppen.com/support/find_service_centre/. Factory service In the event a Lab.gruppen product requires factory service, you may contact Lab.gruppen’s service department for return instructions and a Return Authorization number.
Notes Notes E SERIES Operation Manual rev 2.0.
IDEEATM and RSLTM are trademarks of Lab.gruppen AB. All other trademarks remain the property of their respective owners. Copyright © 2014 Lab.gruppen AB. All rights reserved. Item no. OM-ES labgruppen.
